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## org.apache.catalina.authenticator
Class BasicAuthenticator

    java.lang.Object
      org.apache.catalina.valves.ValveBase
          org.apache.catalina.authenticator.AuthenticatorBase
              org.apache.catalina.authenticator.BasicAuthenticator

All Implemented Interfaces:
  Authenticator, Contained, Lifecycle, javax.management.MBeanRegistration, Valve

public class BasicAuthenticator
extends AuthenticatorBase

An Authenticator and Valve implementation of HTTP BASIC Authentication, as outlined in RFC 2617: "HTTP Authentication: Basic and Digest Access Authentication."

Version:
  $Revision: 1.6 $ $Date: 2004/05/16 14:42:36 $
Author:
  Craig R. McClanahan

Field Summary
`protected static java.lang.String` | `info` Descriptive information about this implementation.

Fields inherited from class org.apache.catalina.authenticator.AuthenticatorBase
`algorithm, cache, context, debug, DEFAULT_ALGORITHM, digest, disableProxyCaching, entropy, lifecycle, random, randomClass, SESSION_ID_BYTES, sm, sso, started`

Fields inherited from class org.apache.catalina.valves.ValveBase
`container, controller, domain, mserver, oname`

Fields inherited from interface org.apache.catalina.Lifecycle
`AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, START_EVENT, STOP_EVENT`

Constructor Summary
`BasicAuthenticator()`

Method Summary
`boolean` | `authenticate(HttpRequest request, HttpResponse response, LoginConfig config)` Authenticate the user making this request, based on the specified login configuration.
`java.lang.String` | `getInfo()` Return descriptive information about this Valve implementation.
`protected java.lang.String` | `parsePassword(java.lang.String authorization)` Parse the password from the specified authorization credentials.
`protected java.lang.String` | `parseUsername(java.lang.String authorization)` Parse the username from the specified authorization credentials.

Methods inherited from class org.apache.catalina.authenticator.AuthenticatorBase
`addLifecycleListener, associate, findLifecycleListeners, generateSessionId, getAlgorithm, getCache, getContainer, getDebug, getDigest, getDisableProxyCaching, getEntropy, getRandom, getRandomClass, getSession, getSession, invoke, log, log, reauthenticateFromSSO, register, removeLifecycleListener, setAlgorithm, setCache, setContainer, setDebug, setDisableProxyCaching, setEntropy, setRandomClass, start, stop`

Methods inherited from class org.apache.catalina.valves.ValveBase
`createObjectName, getContainerName, getController, getDomain, getObjectName, getParentName, postDeregister, postRegister, preDeregister, preRegister, setController, setObjectName`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### info

    protected static final java.lang.String info

  Descriptive information about this implementation.

  See Also:
    Constant Field Values

Constructor Detail

### BasicAuthenticator

    public BasicAuthenticator()

Method Detail

### getInfo

    public java.lang.String getInfo()

  Return descriptive information about this Valve implementation.

  Specified by:
    `getInfo` in interface `Valve`
  Overrides:
    `getInfo` in class `AuthenticatorBase`

### authenticate

    public boolean authenticate(HttpRequest request,
                                HttpResponse response,
                                LoginConfig config)
                         throws java.io.IOException

  Authenticate the user making this request, based on the specified login configuration. Return `true` if any specified constraint has been satisfied, or `false` if we have created a response challenge already.

  Specified by:
    `authenticate` in class `AuthenticatorBase`
  Parameters:
    `request` - Request we are processing
    `response` - Response we are creating
    `config` - Login configuration describing how authentication should be performed
  Throws:
    `java.io.IOException` - if an input/output error occurs

### parseUsername

    protected java.lang.String parseUsername(java.lang.String authorization)

  Parse the username from the specified authorization credentials. If none can be found, return `null`.

  Parameters:
    `authorization` - Authorization credentials from this request

### parsePassword

    protected java.lang.String parsePassword(java.lang.String authorization)

  Parse the password from the specified authorization credentials. If none can be found, return `null`.

  Parameters:
    `authorization` - Authorization credentials from this request

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